package com.example.jimuyutabletcontrol.utils;

import android.content.Context;
import android.content.Intent;
import android.graphics.Color;
import android.os.Handler;
import android.os.Looper;
import android.util.Log;

import com.baidu.mapapi.map.BaiduMap;
import com.baidu.mapapi.map.MapStatus;
import com.baidu.mapapi.map.MapStatusUpdateFactory;
import com.baidu.mapapi.map.MapView;
import com.baidu.mapapi.map.Marker;
import com.baidu.mapapi.map.Polyline;
import com.baidu.mapapi.map.PolylineOptions;
import com.baidu.mapapi.model.LatLng;
import com.baidu.mapapi.utils.DistanceUtil;

import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

/**
 * @author: HDX
 * @date: 2020\6\2 0002
 */
public class MarkMoveUtil {
    //起始经度
    private static double sl0;// = 125.30227000000002;
    //起始纬度
    private static double slt;//= 43.88362;
    //结束点经度
    private static double el0;//= 129.40227000000002;
    //结束点纬度
    private static double elt;// = 49.68362;
    //决定小数点后取几位的参数
    private static double param;//= 1000;
    private BaiduMap mBaiduMap;
    private Polyline mPolyline;
    private Marker mMoveMarker;
    //移动处理的 Handler
    private Handler mHandler;
    private MapView mMapView;
    //把起始点和结束点等分成十份的点的容器
    private static List<LatLng> latlngs;
    //每移动一次的时间间隔(通过设置间隔时间和距离可以控制速度和图标移动的距离)
    private double time_interval = 5;
    private Context context;

    private final String ACTION_NAME = "发送广播";


    /**
     * @param sl0
     * @param slt
     * @param param
     * @param mMapView
     */
    public MarkMoveUtil(double sl0, double slt, double param, MapView mMapView, Marker marker, Context context) {
        this.sl0 = sl0;
        this.slt = slt;
        this.param = param;
        this.mMapView = mMapView;
        this.mBaiduMap = mMapView.getMap();
        this.mMoveMarker = marker;
        this.context = context;
        mHandler = new Handler(Looper.getMainLooper());
        MapStatus.Builder builder = new MapStatus.Builder();
        builder.target(new LatLng(slt, sl0));
        builder.zoom(11.0f);
        mBaiduMap.setMapStatus(MapStatusUpdateFactory.newMapStatus(builder.build()));
    }


    /**
     * 获取等分的十个点的集合
     *
     * @param sl0
     * @param slt
     * @param el0
     * @param elt
     */
    private static void getLatlngs(double sl0, double slt, double el0, double elt) {
        Log.e("CCC", el0 + ":" + elt);
        double a = elt - slt;
        double b = el0 - sl0;
        double c = a / param;
        double d = b / param;
        latlngs = new ArrayList<>();
        for (int i = 0; i < param; i++) {
            double lat = slt + c * i;
            double lon = sl0 + d * i;
            latlngs.add(new LatLng(lat, lon));
        }
    }

    /**
     * 根据点画出线
     */
    public void drawPolyLine() {
        List<LatLng> polylines = new ArrayList<>();
        for (int index = 0; index < latlngs.size(); index++) {
            polylines.add(latlngs.get(index));
        }
        polylines.add(latlngs.get(0));
        PolylineOptions polylineOptions = new PolylineOptions().points(polylines).width(10).color(Color.RED);
        mPolyline = (Polyline) mBaiduMap.addOverlay(polylineOptions);
    }

    /**
     * 根据点获取图标转的角度
     */
    private double getAngle(int startIndex) {
        if ((startIndex + 1) >= mPolyline.getPoints().size()) {
            throw new RuntimeException("index out of bonds");
        }
        LatLng startPoint = mPolyline.getPoints().get(startIndex);
        LatLng endPoint = mPolyline.getPoints().get(startIndex + 1);
        return getAngle(startPoint, endPoint);
    }

    /**
     * 根据两点算取图标转的角度
     */
    private double getAngle(LatLng fromPoint, LatLng toPoint) {
        double slope = getSlope(fromPoint, toPoint);
        if (slope == Double.MAX_VALUE) {
            if (toPoint.latitude > fromPoint.latitude) {
                return 0;
            } else {
                return 180;
            }
        }
        float deltAngle = 0;
        if ((toPoint.latitude - fromPoint.latitude) * slope < 0) {
            deltAngle = 180;
        }
        double radio = Math.atan(slope);
        double angle = 180 * (radio / Math.PI) + deltAngle - 90;
        return angle;
    }

    /**
     * 根据点和斜率算取截距
     */
    private double getInterception(double slope, LatLng point) {
        double interception = point.latitude - slope * point.longitude;
        return interception;
    }

    /**
     * 算斜率
     */
    private double getSlope(LatLng fromPoint, LatLng toPoint) {
        if (toPoint.longitude == fromPoint.longitude) {
            return Double.MAX_VALUE;
        }
        double slope = ((toPoint.latitude - fromPoint.latitude) / (toPoint.longitude - fromPoint.longitude));
        return slope;
    }

    private double getDistance() {
        double distance = DistanceUtil.getDistance(latlngs.get(0), latlngs.get((int) param - 1));
        double v = distance / 10000;
        double theDistance = v * (time_interval / 1000);
        return theDistance;
    }

    /**
     * 循环进行移动逻辑
     */
    public void moveLooper() {
        new Thread() {
            public void run() {
//                while (true) {
                Log.e("TAG", "start time:" + getCurrentTime());
                for (int i = 0; i < latlngs.size() - 1; i++) {
                    final LatLng startPoint = latlngs.get(i);
                    final LatLng endPoint = latlngs.get(i + 1);
                    mMoveMarker
                            .setPosition(startPoint);

                    mHandler.post(new Runnable() {
                        @Override
                        public void run() {
                            // refresh marker's rotate
                            if (mMapView == null) {
                                return;
                            }
                            mMoveMarker.setRotate((float) getAngle(startPoint,
                                    endPoint));
                        }
                    });
                    double slope = getSlope(startPoint, endPoint);
                    // 是不是正向的标示
                    boolean isReverse = (startPoint.latitude > endPoint.latitude);
                    double intercept = getInterception(slope, startPoint);
                    double xMoveDistance = isReverse ? getDistance() :
                            -1 * getDistance();
                    for (double j = startPoint.latitude; !((j > endPoint.latitude) ^ isReverse);
                         j = j - xMoveDistance) {
                        LatLng latLng = null;
                        if (slope == Double.MAX_VALUE) {
                            latLng = new LatLng(j, startPoint.longitude);
                        } else {
                            latLng = new LatLng(j, (j - intercept) / slope);
                        }
                        final LatLng finalLatLng = latLng;
                        mHandler.post(new Runnable() {
                            @Override
                            public void run() {
                                if (mMapView == null) {
                                    return;
                                }
                                mMoveMarker.setPosition(finalLatLng);
                            }
                        });
                        try {
                            Thread.sleep((int) time_interval);
                        } catch (InterruptedException e) {
                            e.printStackTrace();
                        }
                    }
                }
                Log.e("TAG", "end time:" + getCurrentTime());
                sl0 = el0;
                slt = elt;
                Intent mIntent = new Intent(ACTION_NAME);
                mIntent.putExtra("yaner", "发送广播，相当于在这里传送数据");
                //发送广播
                context.sendBroadcast(mIntent);
//                }
            }
        }.start();
    }

    public static void start(LatLng latLng) {
        el0 = latLng.longitude;
        elt = latLng.latitude;
        getLatlngs(sl0, slt, el0, elt);
    }

    private String getCurrentTime() {
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy年MM月dd日    HH:mm:ss     ");
        Date curDate = new Date(System.currentTimeMillis());//获取当前时间
        String str = formatter.format(curDate);
        return str;
    }

//    private Marker createMarker(LatLng latLng){
//        OverlayOptions markerOptions = new MarkerOptions().flat(true).anchor(0.5f, 0.5f)
//                .icon(BitmapDescriptorFactory.fromResource(R.drawable.arrow)).position(latLng)
//                .rotate(0);
//        return (Marker) mBaiduMap.addOverlay(markerOptions);
//    }

}
